Through all theMuppetssequel news —noJason Segel;maybesome Christoph Waltz — the cry for more tunes fromFlight of the Conchordsco-creator Bret McKenzie, who took home an Oscar for "Man or Muppet," has been ceaseless. Well,he's definitely in, and writing songs as of now. More updates: The sequel will film in January in London, and there may be a new Muppet.